Only print evaluate requests in REPL context

This PR checks to see if the `-exec` commands are originally from the
REPL context (e.g. the Debug Console). If so, it will redirect the
output of the -exec command to the REPL window. If it is another
context, it will not print anything.

src/MIDebugEngine/Engine.Impl/Variables.cs

@@ -524,13 +524,8 @@ internal async Task Eval(uint radix, enum_EVALFLAGS dwFlags = 0, DAPEvalFlags dw
                     string consoleResults = null;
 
                     consoleResults = await MIDebugCommandDispatcher.ExecuteCommand(consoleCommand, _debuggedProcess, ignoreFailures: true);
-                    Value = String.Empty;
+                    Value = consoleResults;
                     this.TypeName = null;
-
-                    if (!String.IsNullOrEmpty(consoleResults))
-                    {
-                        _debuggedProcess.WriteOutput(consoleResults);
-                    }
                 }
                 else
                 {